What a total prick, lets hope someone rams him on his bicycle one day. But yeah you probably shouldnt have hung next to him so long. And if you gonna make a hand gesture of anger/frustration/abuse you probably want to do it as you pass not from behind and then sit there next to him, lol. Ive ridden bikes on the road since i was 15 (i never had a car till my early 20's) and one thing i have learnt is you are the lowest in the pecking order of traffic apart from pedestrians and bicycles...trucks reign supreme
And also these days you never know how someone gonna react or how prone they are to road rage. Your better off not getting pissed off and getting away from the scene imo, better to swallow your pride and ride off even if they are total ass holes like this guy and deserve abuse. But yeah that was inbeleivable, this guy was willing to knock someone off theyre bike and potentially kill them. I would be tempted to give the footage to the cops so he gets done for it.